An embodiment of the present application relates to a signal processing method and apparatus. The method includes: determining a plurality of signals that are quasi-co-located with a first port set of a first reference signal, wherein the first port set is used to send or receive the first reference signal, and the first port set comprises at least one port; determining a target signal among the plurality of signals; and sending or receiving the first reference signal via the first port set according to a quasi-co-location relationship between the first port set and the target signal.